Matrix dimensions must agree

Hello i am trying to use 'pcolor' command and error keeps popping up that ' matrix dimensions must agree ' i am a beginner and clueless on how to fix this if anyone could help id appreciate it , Thank you

ls *.asc

load('CTDGrpA1_conv_binav_asc.asc')
load('CTDGrpA2_conv_binav_asc.asc')
load('CTDGrpA3_conv_binav_asc.asc')
load('CTDGrpA4_conv_binav_asc.asc')
load('CTDGrpA5_conv_binav_asc.asc')
load('CTDGrpA6_conv_binav_asc.asc')
load('CTDGrpA7_conv_binav_asc.asc')
load('CTDGrpA8_conv_binav_asc.asc')
load('CTDGrpA9_conv_binav_asc.asc')
T1=CTDGrpA1_conv_binav_asc(:,2);S1=CTDGrpA1_conv_binav_asc(:,3);depth1=CTDGrpA1_conv_binav_asc(:,1);
T2=CTDGrpA2_conv_binav_asc(1:13,2);S2=CTDGrpA2_conv_binav_asc(1:13,3);depth2=CTDGrpA2_conv_binav_asc(1:13,1);
T3=CTDGrpA3_conv_binav_asc(1:14,2);S3=CTDGrpA3_conv_binav_asc(1:14,3);depth3=CTDGrpA3_conv_binav_asc(1:14,1);
T4=CTDGrpA4_conv_binav_asc(1:14,2);S4=CTDGrpA4_conv_binav_asc(1:14,3);depth4=CTDGrpA4_conv_binav_asc(1:14,1);
T5=CTDGrpA5_conv_binav_asc(1:15,2);S5=CTDGrpA5_conv_binav_asc(1:15,3);depth5=CTDGrpA5_conv_binav_asc(1:15,1);
T6=CTDGrpA6_conv_binav_asc(1:12,2);S6=CTDGrpA6_conv_binav_asc(1:12,3);depth6=CTDGrpA6_conv_binav_asc(1:12,1);
T7=CTDGrpA7_conv_binav_asc(1:11,2);S7=CTDGrpA7_conv_binav_asc(1:11,3);depth7=CTDGrpA7_conv_binav_asc(1:11,1);
T8=CTDGrpA8_conv_binav_asc(1:8,2);S8=CTDGrpA8_conv_binav_asc(1:8,3);depth8=CTDGrpA8_conv_binav_asc(1:8,1);
T9=CTDGrpA9_conv_binav_asc(1:5,2);S9=CTDGrpA9_conv_binav_asc(1:5,3);depth9=CTDGrpA9_conv_binav_asc(1:5,1);
max_length=29;
Temperature1=[T1; nan(max_length-length(T1),1)];
Temperature2=[T2; nan(max_length-length(T2),1)];
Temperature3=[T3; nan(max_length-length(T3),1)];
Temperature4=[T4; nan(max_length-length(T4),1)];
Temperature5=[T5; nan(max_length-length(T5),1)];
Temperature6=[T6; nan(max_length-length(T6),1)];
Temperature7=[T7; nan(max_length-length(T7),1)];
Temperature8=[T8; nan(max_length-length(T8),1)];
Temperature9=[T9; nan(max_length-length(T9),1)];
whos Temperature*
Temperature_Matrix=[Temperature1 Temperature2 Temperature3 Temperature4 Temperature5 Temperature6 Temperature7 Temperature8 Temperature9];
Depth=depth5;
station=1:9;
figure
pcolor(station,Depth,Temperature_Matrix)

Answer 1

[Voss]

Read the descriptions on the pcolor documentation page for X, Y, and C - specifically how their sizes must be related.

Then check the sizes of your variables station, Depth, and Temperature_Matrix, figure out why they don't conform to what the documentation says and what you need to do about it.

It looks like your Temperature_Matrix is a matrix with 9 columns, and station is a vector with 9 elements. Those are consistent with each other, so the problem is with Depth (i.e., depth5). It's a 15x1 column vector, but Temperature_Matrix has 29 (=max_length) rows, so that's inconsistent.

[Voss]

Rather than hard-coding fixed variable values like 29 into your code, determine what you need from the actual variables you have. Here's how you could build Temperature_Matrix from T1 through T9, where the number of rows in Temperature_Matrix is the maximum number of elements in T1 through T9, and also to pick the depth vector with the maximum number of elements, to use in pcolor:

T = {T1,T2,T3,T4,T5,T6,T7,T8,T9};
Z = {depth1,depth2,depth3,depth4,depth5,depth6,depth7,depth8,depth9};

N = numel(T);

T_length = cellfun(@numel,T);
[max_length,max_idx] = max(T_length);

Temperature_Matrix = NaN(max_length,N);
for ii = 1:N
    Temperature_Matrix(1:T_length(ii),ii) = T{ii};
end

Depth = Z{max_idx};
station = 1:N;
figure
pcolor(station,Depth,Temperature_Matrix)